There's a tremendous difference between alone and lonely. You could be lonely in a group of people. I like being alone. I like eating by myself. I go home at night and just watch a movie or hang out with my dog. I have to exert myself and really say oh God I've got to see my friends 'cause I'm too content being by myself.
What you say of the pride of giving life to an immortal soul is very fine dear, but I own I cannot enter into that: I think much more of our being like a cow or a dog at such moments: when our poor nature becomes so very animal and unecstatic.